PIA config, not able to chose right location

[ghost]

Hi,
I'm using transmission-openvpn in docker on a synology.
I was previously using vpn.ac as torrent provider and everything worked perfectly fine.

Now I move to PIA as provider, and even if I manage to connect with the new credentials, the location test I do with http://checkmyip.torrentprivacy.com is showing random download locations (Romania, Chile, where it should be netherlands)

First config I tried is this one:
volumes: - /volume1/docker/transmission-openvpn:/config environment: - OPENVPN_PROVIDER=PIA - OPENVPN_CONFIG=netherlands - OPENVPN_USERNAME=pxxxxx - OPENVPN_PASSWORD=yyyyyy
Connection is fine, it downloads, but location is not netherlands

Second config I tried is this one:
volumes: - /volume1/docker/transmission-openvpn:/config - /volume1/docker/transmission-openvpn/vpn-configs-contrib/openvpn/pia:/etc/openvpn/custom/ environment: - OPENVPN_PROVIDER=custom - OPENVPN_CONFIG=netherlands - OPENVPN_USERNAME=pxxxxx - OPENVPN_PASSWORD=yyyy
while putting all the ovpn files (openvpn-strong-tcp) in the /volume1/docker/transmission-openvpn/vpn-configs-contrib/openvpn/pia folder
Again, it works, it connects and download well, but location is not netherlands.

Also I wonder, when not doing the second method (not copying the ovpn files somewhere), how the level of encryption can be chosen with PIA, since all ovpn from a specific location have the same name, whatever their inside config (AES 128, 256...).

thanks for you appreciated help here